Other Balance Sheet Items (Income Tax Receivables And Other Current Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Income tax and other receivables	$ 14,372	$ 24,821
Prepaid expenses	16,060	16,190
Deferred Tax Assets, Net of Valuation Allowance, Current	848	894
Other Assets, Current	$ 31,280	$ 41,905